Health & Environmental Research Online (HERO)


Print Feedback Export to File
6173270 
Journal Article 
Influence of platinum dispersion on the hydrodearomatization of toluene to light alkanes on Pt/H-ZSM-5 
Böttcher, S; Göhlich, M; Reschetilowski, W; Räuchle, K 
2011 
Yes 
Catalysis Communications
ISSN: 1566-7367 
12 
8 
757-760 
WOS:000288875900016 
The hydrodearomatization of toluene to light n-alkanes on Pt/H-ZSM-5 catalyst samples in a temperature range of 523–673K was investigated. It was demonstrated that the metal dispersion and the interaction between metal and acid sites influence the catalytic activity and selectivity. Depending on the Pt dispersion of the prepared catalyst samples, different hydrogenolysis activities were observed. The yield of methane rises with increasing Pt dispersion. This effect can be explained by a change of the electronic properties of the noble metal depending on its vicinity to Brønsted acid sites. Furthermore, the Pt dispersion influences the deactivation behavior. A low dispersion of Pt led to an increased deactivation behavior at a higher time on stream. 
Toluene; Hydrodearomatization; Platinum dispersion; ZSM-5 zeolite; Light alkanes; Deactivation